@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

:root {
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --primary: #6366f1;
  --primary-hover: #4f46e5;
  --primary-light: rgba(99, 102, 241, 0.12);
  --accent: #8b5cf6;
  --success: #10b981;
  --success-light: rgba(16, 185, 129, 0.12);
  --danger: #ef4444;
  --danger-light: rgba(239, 68, 68, 0.12);
  --warning: #f59e0b;
  --warning-light: rgba(245, 158, 11, 0.12);
  --info: #3b82f6;
  --bg: #f8fafc;
  --bg-elevated: #ffffff;
  --bg-glass: rgba(255, 255, 255, 0.72);
  --text: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --border: #e2e8f0;
  --border-light: #f1f5f9;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.05);
  --shadow: 0 4px 6px -1px rgba(15, 23, 42, 0.08), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
  --shadow-lg: 0 20px 40px -12px rgba(15, 23, 42, 0.15);
  --radius: 16px;
  --radius-sm: 10px;
  --radius-lg: 20px;
  --transition: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --sidebar-bg: #0f172a;
  --sidebar-text: rgba(255, 255, 255, 0.65);
  --sidebar-active: rgba(99, 102, 241, 0.25);
  --gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #a855f7 100%);
  --gradient-subtle: linear-gradient(135deg, rgba(99,102,241,0.08) 0%, rgba(139,92,246,0.08) 100%);
}

[data-theme="dark"] {
  --primary: #818cf8;
  --primary-hover: #6366f1;
  --primary-light: rgba(129, 140, 248, 0.15);
  --bg: #0f172a;
  --bg-elevated: #1e293b;
  --bg-glass: rgba(30, 41, 59, 0.85);
  --text: #f1f5f9;
  --text-secondary: #cbd5e1;
  --text-muted: #64748b;
  --border: #334155;
  --border-light: #1e293b;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 20px 40px -12px rgba(0, 0, 0, 0.5);
  --sidebar-bg: #020617;
  --gradient-subtle: linear-gradient(135deg, rgba(99,102,241,0.12) 0%, rgba(139,92,246,0.12) 100%);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  transition: background var(--transition), color var(--transition);
  -webkit-font-smoothing: antialiased;
}

.hidden { display: none !important; }

/* Theme toggle */
.theme-toggle {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}
.theme-toggle:hover { background: var(--primary-light); color: var(--primary); border-color: var(--primary); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  border: none;
  border-radius: var(--radius-sm);
  font-family: var(--font);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}
.btn-block { width: 100%; }
.btn-primary { background: var(--gradient); color: #fff; box-shadow: 0 2px 8px rgba(99,102,241,0.35); }
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 4px 12px rgba(99,102,241,0.45); }
.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { filter: brightness(1.08); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { filter: brightness(1.08); }
.btn-outline {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  color: var(--text);
}
.btn-outline:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-light); }
.btn-sm { padding: 7px 14px; font-size: 13px; }
.btn:disabled { opacity: 0.45; cursor: not-allowed; transform: none !important; }

/* Form fields */
.field { margin-bottom: 18px; }
.field label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
}
.field input, .field select, .field textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: var(--font);
  font-size: 15px;
  background: var(--bg-elevated);
  color: var(--text);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
}
.badge-green { background: var(--success-light); color: var(--success); }
.badge-gray { background: var(--border-light); color: var(--text-muted); }
.badge-yellow { background: var(--warning-light); color: var(--warning); }
.badge-blue { background: rgba(59,130,246,0.12); color: var(--info); }
.badge-red { background: var(--danger-light); color: var(--danger); }

/* Cards */
.card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}
.card:hover { box-shadow: var(--shadow); }
.card-glass {
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 20px;
  animation: fadeIn 0.2s;
}
.modal {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  width: 100%;
  max-width: 500px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  animation: slideUp 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}
.modal-wide { max-width: 720px; }
.modal h2 { margin-bottom: 16px; font-size: 20px; font-weight: 700; }
.modal-actions { display: flex; gap: 10px; margin-top: 24px; justify-content: flex-end; }

/* Photo upload */
.photo-preview {
  width: 100%;
  max-height: 220px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  margin: 12px 0;
}
.photo-upload {
  border: 2px dashed var(--border);
  border-radius: var(--radius-sm);
  padding: 28px;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition);
  color: var(--text-muted);
}
.photo-upload:hover { border-color: var(--primary); background: var(--primary-light); color: var(--primary); }
.photo-upload input { display: none; }

/* Toast */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--text);
  color: var(--bg-elevated);
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  z-index: 2000;
  box-shadow: var(--shadow-lg);
  animation: toastIn 0.3s;
}
.toast.error { background: var(--danger); color: #fff; }

/* Skeleton */
.skeleton {
  background: linear-gradient(90deg, var(--border) 25%, var(--border-light) 50%, var(--border) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
}
@keyframes shimmer { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes slideUp { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: translateY(0); } }
@keyframes toastIn { from { opacity: 0; transform: translateX(-50%) translateY(12px); } to { opacity: 1; transform: translateX(-50%) translateY(0); } }

.error { color: var(--danger); font-size: 14px; margin-bottom: 12px; }
.success { color: var(--success, #16a34a); font-size: 14px; margin-bottom: 12px; }
.login-forgot { text-align: center; margin-top: 16px; font-size: 14px; }
.login-forgot a { color: var(--primary); text-decoration: none; }
.login-forgot a:hover { text-decoration: underline; }
.muted { color: var(--text-muted); font-size: 14px; }

/* Lucide icon sizing in buttons */
.btn svg, .nav-item svg { width: 18px; height: 18px; flex-shrink: 0; }

@media (max-width: 768px) {
  .modal-overlay {
    padding: 0;
    align-items: flex-end;
  }
  .modal {
    max-width: none;
    max-height: 92vh;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    padding: 20px 16px calc(20px + env(safe-area-inset-bottom));
  }
  .modal-wide { max-width: none; }
  .modal h2 { font-size: 18px; }
  .field-row { grid-template-columns: 1fr !important; }
  .toast {
    bottom: calc(16px + env(safe-area-inset-bottom));
    left: 16px;
    right: 16px;
    transform: none;
    text-align: center;
  }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .modal-overlay { padding: 16px; }
  .modal { padding: 22px; }
}